rt2x00: rework RT chipset and revision determination for PCI an SOC devices.

The recent rt2800 devices are no longer really identified by their PCI
ID's, but rather by the contents of their CSR0 register. Also for the
other chipsets is the contents of this CSR0 register important.
Change the chipset determination logic to be more aligned with the rt2800
model.
Preparation for the support of rt3070 / rt3090 based devices.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 11 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 82755cf8b73e..79ea3798d597 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -92,7 +92,6 @@ static bool rt2800usb_check_crc(const u8 *data, const size_t len)
 static int rt2800usb_check_firmware(struct rt2x00_dev *rt2x00dev,
                                     const u8 *data, const size_t len)
 {
-        u16 chipset = (rt2x00_rev(rt2x00dev) >> 16) & 0xffff;
         size_t offset = 0;
 
         /*
@@ -111,9 +110,9 @@ static int rt2800usb_check_firmware(struct rt2x00_dev *rt2x00dev,
          * Check if we need the upper 4kb firmware data or not.
          */
         if ((len == 4096) &&
-            (chipset != 0x2860) &&
-            (chipset != 0x2872) &&
-            (chipset != 0x3070))
+            !rt2x00_rt(rt2x00dev, RT2860) &&
+            !rt2x00_rt(rt2x00dev, RT2872) &&
+            !rt2x00_rt(rt2x00dev, RT3070))
                 return FW_BAD_VERSION;
 
         /*
@@ -138,14 +137,13 @@ static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev,
         u32 reg;
         u32 offset;
         u32 length;
-        u16 chipset = (rt2x00_rev(rt2x00dev) >> 16) & 0xffff;
 
         /*
          * Check which section of the firmware we need.
          */
-        if ((chipset == 0x2860) ||
-            (chipset == 0x2872) ||
-            (chipset == 0x3070)) {
+        if (rt2x00_rt(rt2x00dev, RT2860) ||
+            rt2x00_rt(rt2x00dev, RT2872) ||
+            rt2x00_rt(rt2x00dev, RT3070)) {
                 offset = 0;
                 length = 4096;
         } else {
@@ -200,9 +198,9 @@ static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev,
          */
         rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0xff, 0, 0);
 
-        if ((chipset == 0x3070) ||
-            (chipset == 0x3071) ||
-            (chipset == 0x3572)) {
+        if (rt2x00_rt(rt2x00dev, RT3070) ||
+            rt2x00_rt(rt2x00dev, RT3071) ||
+            rt2x00_rt(rt2x00dev, RT3572)) {
                 udelay(200);
                 rt2800_mcu_request(rt2x00dev, MCU_CURRENT, 0, 0, 0);
                 udelay(10);